<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>页面未找到 - 404错误</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Arial', sans-serif;
            background-color: #f5f5f5;
            color: #333;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        
        /* 导航栏样式 */
        .navbar {
            background-color: white;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
            padding: 15px 0;
        }
        
        .container {
            width: 90%;
            max-width: 1200px;
            margin: 0 auto;
        }
        
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .logo {
            font-size: 24px;
            font-weight: bold;
            color: #4a90e2;
            text-decoration: none;
        }
        
        /* 404内容区域 */
        .error-content {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 60px 0;
            text-align: center;
        }
        
        .error-container {
            max-width: 600px;
            margin: 0 auto;
        }
        
        .error-code {
            font-size: 120px;
            font-weight: bold;
            color: #4a90e2;
            line-height: 1;
            margin-bottom: 20px;
        }
        
        .error-title {
            font-size: 32px;
            margin-bottom: 20px;
            color: #333;
        }
        
        .error-message {
            font-size: 18px;
            color: #666;
            margin-bottom: 30px;
            line-height: 1.6;
        }
        
        .error-image {
            max-width: 300px;
            margin: 0 auto 30px;
        }
        
        .error-image img {
            width: 100%;
            height: auto;
        }
        
        .action-buttons {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-top: 30px;
        }
        
        .btn {
            padding: 12px 30px;
            border-radius: 4px;
            text-decoration: none;
            font-weight: bold;
            transition: all 0.3s;
            display: inline-block;
        }
        
        .btn-primary {
            background-color: #4a90e2;
            color: white;
        }
        
        .btn-primary:hover {
            background-color: #3a7bc8;
        }
        
        .btn-secondary {
            background-color: white;
            color: #4a90e2;
            border: 2px solid #4a90e2;
        }
        
        .btn-secondary:hover {
            background-color: #f0f0f0;
        }
        
        /* 页脚样式 */
        footer {
            background-color: #333;
            color: white;
            padding: 30px 0 20px;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }
        
        .footer-column h3 {
            margin-bottom: 20px;
            font-size: 18px;
        }
        
        .footer-links {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 10px;
        }
        
        .footer-links a {
            color: #bbb;
            text-decoration: none;
            transition: color 0.3s;
        }
        
        .footer-links a:hover {
            color: white;
        }
        
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #444;
            color: #bbb;
            font-size: 14px;
        }
    </style>
</head>
<body>
    <!-- 导航栏 -->
    <nav class="navbar">
        <div class="container nav-container">
            <a href="/" class="logo">网站Logo</a>
        </div>
    </nav>
    
    <!-- 404内容区域 -->
    <main class="error-content">
        <div class="container error-container">
            <div class="error-image">
                <img src="https://cdn.pixabay.com/photo/2017/03/09/12/31/error-2129569_960_720.jpg" alt="404错误">
            </div>
            <div class="error-code">404</div>
            <h1 class="error-title">页面未找到</h1>
            <p class="error-message">
                抱歉，您访问的页面不存在或已被移除。<br>
                可能是网址输入错误，或者页面已被删除。
            </p>
            <div class="action-buttons">
                <a href="/" class="btn btn-primary">返回首页</a>
                <a href="mailto:support@example.com" class="btn btn-secondary">联系支持</a>
            </div>
        </div>
    </main>
    
    <!-- 页脚 -->
    <footer>
        <div class="container">
            <div class="footer-content">
                <div class="footer-column">
                    <h3>快速链接</h3>
                    <ul class="footer-links">
                        <li><a href="/">首页</a></li>
                        <li><a href="#">产品</a></li>
                        <li><a href="#">服务</a></li>
                        <li><a href="#">关于我们</a></li>
                    </ul>
                </div>
                <div class="footer-column">
                    <h3>帮助中心</h3>
                    <ul class="footer-links">
                        <li><a href="#">常见问题</a></li>
                        <li><a href="#">使用教程</a></li>
                        <li><a href="#">联系我们</a></li>
                    </ul>
                </div>
                <div class="footer-column">
                    <h3>法律信息</h3>
                    <ul class="footer-links">
                        <li><a href="#">服务条款</a></li>
                        <li><a href="#">隐私政策</a></li>
                    </ul>
                </div>
            </div>
            <div class="copyright">
                <p>&copy; 2023 公司名称. 保留所有权利.</p>
            </div>
        </div>
    </footer>
</body>
</html>